There’s the search bar (⌘ + ⇧ + F) and there’s the new Quick Open (⌘ + O). I would suggest that these be merged into one feature, so that you from Quick Open, as one of the choices, can translate your query into a search like so,
Right now I need to decide between either feature when looking for a note/notes and in Quick Open I might discover that I need to turn my query into a search instead because I want to browse through the results shown.
Instead of picking the result it could also be done as a command e.g. ⌘ + ⇧ + ↵ would perform the current query as a search.